Anja S. Gritz

The Impact of Material Incentives on Response Quantity, Response Quality, Sample Composition, Survey Outcome and Cost in Online Access Panels

Anja S. Gritz, 2004 .

Online Panel Research: A Data Quality Perspective

Mario Callegaro, Jelke Bethlehem, Jon A. Krosnick, 2014 .

Recruitment for Online Access Panels

Anja S. Gritz, 2004 .